What percentage of the placenta is of fetal vs. maternal origin?

A. 20% vs. 80%
B. 33% vs. 66%
C. 50% vs. 50%
D. 75% vs. 25%
E. 80% vs. 20%


Answer: E. 80% vs. 20%

Biology & Microbiology

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Fill in the blank(s) with correct word

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What is the total number of possible outcomes that two gametes, both of which are heterozygous for both of their alleles, can produce?

a. 4 outcomes b. 12 outcomes c. 14 outcomes d. 16 outcomes e. 32 outcomes

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A solid waste (garbage) transfer facility that sorts and breaks down garbage into recyclables and waste to be thrown away in the landfill would be a suitable analogy for which cellular organelle?

a. smooth ER b. rough ER c. lysosome d. nucleus

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Archegonia _____

A) are the sites where male gametes are produced B) may contain sporophyte embryos C) have the same function as sporangia D) make asexual reproductive structures

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